src/msw/button.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/button.cpp
   3 // Purpose:     wxButton
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "button.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_BUTTON
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/app.h"
  35     #include "wx/button.h"
  36     #include "wx/brush.h"
  37     #include "wx/panel.h"
  38     #include "wx/bmpbuttn.h"
  39     #include "wx/settings.h"
  40     #include "wx/dcscreen.h"
  41 #endif
  42
  43 #include "wx/msw/private.h"
  44
  45 // ----------------------------------------------------------------------------
  46 // macros
  47 // ----------------------------------------------------------------------------
  48
  49 #if wxUSE_EXTENDED_RTTI
  50
  51 WX_DEFINE_FLAGS( wxButtonStyle )
  52
  53 WX_BEGIN_FLAGS( wxButtonStyle )
  54     // new style border flags, we put them first to
  55     // use them for streaming out
  56     WX_FLAGS_MEMBER(wxBORDER_SIMPLE)
  57     WX_FLAGS_MEMBER(wxBORDER_SUNKEN)
  58     WX_FLAGS_MEMBER(wxBORDER_DOUBLE)
  59     WX_FLAGS_MEMBER(wxBORDER_RAISED)
  60     WX_FLAGS_MEMBER(wxBORDER_STATIC)
  61     WX_FLAGS_MEMBER(wxBORDER_NONE)
  62
  63     // old style border flags
  64     WX_FLAGS_MEMBER(wxSIMPLE_BORDER)
  65     WX_FLAGS_MEMBER(wxSUNKEN_BORDER)
  66     WX_FLAGS_MEMBER(wxDOUBLE_BORDER)
  67     WX_FLAGS_MEMBER(wxRAISED_BORDER)
  68     WX_FLAGS_MEMBER(wxSTATIC_BORDER)
  69     WX_FLAGS_MEMBER(wxNO_BORDER)
  70
  71     // standard window styles
  72     WX_FLAGS_MEMBER(wxTAB_TRAVERSAL)
  73     WX_FLAGS_MEMBER(wxCLIP_CHILDREN)
  74     WX_FLAGS_MEMBER(wxTRANSPARENT_WINDOW)
  75     WX_FLAGS_MEMBER(wxWANTS_CHARS)
  76     WX_FLAGS_MEMBER(wxNO_FULL_REPAINT_ON_RESIZE)
  77     WX_FLAGS_MEMBER(wxALWAYS_SHOW_SB )
  78     WX_FLAGS_MEMBER(wxVSCROLL)
  79     WX_FLAGS_MEMBER(wxHSCROLL)
  80
  81     WX_FLAGS_MEMBER(wxBU_LEFT)
  82     WX_FLAGS_MEMBER(wxBU_RIGHT)
  83     WX_FLAGS_MEMBER(wxBU_TOP)
  84     WX_FLAGS_MEMBER(wxBU_BOTTOM)
  85     WX_FLAGS_MEMBER(wxBU_EXACTFIT)
  86 WX_END_FLAGS( wxButtonStyle )
  87
  88 IMPLEMENT_DYNAMIC_CLASS_XTI(wxButton, wxControl,"wx/button.h")
  89
  90 WX_BEGIN_PROPERTIES_TABLE(wxButton)
  91         WX_DELEGATE( OnClick , wxEVT_COMMAND_BUTTON_CLICKED , wxCommandEvent)
  92
  93         WX_PROPERTY( Font , wxFont , SetFont , GetFont  , , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
  94         WX_PROPERTY( Label, wxString , SetLabel, GetLabel, wxEmptyString, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
  95
  96     WX_PROPERTY_FLAGS( WindowStyle , wxButtonStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
  97
  98 WX_END_PROPERTIES_TABLE()
  99
 100 WX_BEGIN_HANDLERS_TABLE(wxButton)
 101 WX_END_HANDLERS_TABLE()
 102
 103 WX_CONSTRUCTOR_6( wxButton , wxWindow* , Parent , wxWindowID , Id , wxString , Label , wxPoint , Position , wxSize , Size , long , WindowStyle  )
 104
 105
 106 #else
 107 IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
 108 #endif
 109
 110 // this macro tries to adjust the default button height to a reasonable value
 111 // using the char height as the base
 112 #define BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cy) (11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)/10)
 113
 114 // ============================================================================
 115 // implementation
 116 // ============================================================================
 117
 118 // ----------------------------------------------------------------------------
 119 // creation/destruction
 120 // ----------------------------------------------------------------------------
 121
 122 bool wxButton::Create(wxWindow *parent,
 123                       wxWindowID id,
 124                       const wxString& label,
 125                       const wxPoint& pos,
 126                       const wxSize& size,
 127                       long style,
 128                       const wxValidator& validator,
 129                       const wxString& name)
 130 {
 131     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
 132         return FALSE;
 133
 134     WXDWORD exstyle;
 135     WXDWORD msStyle = MSWGetStyle(style, &exstyle);
 136
 137 #ifdef __WIN32__
 138     // if the label contains several lines we must explicitly tell the button
 139     // about it or it wouldn't draw it correctly ("\n"s would just appear as
 140     // black boxes)
 141     //
 142     // NB: we do it here and not in MSWGetStyle() because we need the label
 143     //     value and m_label is not set yet when MSWGetStyle() is called;
 144     //     besides changing BS_MULTILINE during run-time is pointless anyhow
 145     if ( label.find(_T('\n')) != wxString::npos )
 146     {
 147         msStyle |= BS_MULTILINE;
 148     }
 149 #endif // __WIN32__
 150
 151     return MSWCreateControl(_T("BUTTON"), msStyle, pos, size, label, exstyle);
 152 }
 153
 154 wxButton::~wxButton()
 155 {
 156 }
 157
 158 // ----------------------------------------------------------------------------
 159 // flags
 160 // ----------------------------------------------------------------------------
 161
 162 WXDWORD wxButton::MSWGetStyle(long style, WXDWORD *exstyle) const
 163 {
 164     // buttons never have an external border, they draw their own one
 165     WXDWORD msStyle = wxControl::MSWGetStyle
 166                       (
 167                         (style & ~wxBORDER_MASK) | wxBORDER_NONE, exstyle
 168                       );
 169
 170     // we must use WS_CLIPSIBLINGS with the buttons or they would draw over
 171     // each other in any resizeable dialog which has more than one button in
 172     // the bottom
 173     msStyle |= WS_CLIPSIBLINGS;
 174
 175 #ifdef __WIN32__
 176     // don't use "else if" here: weird as it is, but you may combine wxBU_LEFT
 177     // and wxBU_RIGHT to get BS_CENTER!
 178     if ( style & wxBU_LEFT )
 179         msStyle |= BS_LEFT;
 180     if ( style & wxBU_RIGHT )
 181         msStyle |= BS_RIGHT;
 182     if ( style & wxBU_TOP )
 183         msStyle |= BS_TOP;
 184     if ( style & wxBU_BOTTOM )
 185         msStyle |= BS_BOTTOM;
 186 #endif // __WIN32__
 187
 188     return msStyle;
 189 }
 190
 191 // ----------------------------------------------------------------------------
 192 // size management including autosizing
 193 // ----------------------------------------------------------------------------
 194
 195 wxSize wxButton::DoGetBestSize() const
 196 {
 197     int wBtn;
 198     GetTextExtent(wxGetWindowText(GetHWND()), &wBtn, NULL);
 199
 200     int wChar, hChar;
 201     wxGetCharSize(GetHWND(), &wChar, &hChar, &GetFont());
 202
 203     // add a margin -- the button is wider than just its label
 204     wBtn += 3*wChar;
 205
 206     // the button height is proportional to the height of the font used
 207     int hBtn = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar);
 208
 209     // all buttons have at least the standard size unless the user explicitly
 210     // wants them to be of smaller size and used wxBU_EXACTFIT style when
 211     // creating the button
 212     if ( !HasFlag(wxBU_EXACTFIT) )
 213     {
 214         wxSize sz = GetDefaultSize();
 215         if (wBtn > sz.x)
 216             sz.x = wBtn;
 217         if (hBtn > sz.y)
 218             sz.y = hBtn;
 219
 220         return sz;
 221     }
 222
 223     return wxSize(wBtn, hBtn);
 224 }
 225
 226 /* static */
 227 wxSize wxButtonBase::GetDefaultSize()
 228 {
 229     static wxSize s_sizeBtn;
 230
 231     if ( s_sizeBtn.x == 0 )
 232     {
 233         wxScreenDC dc;
 234         dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 235
 236         // the size of a standard button in the dialog units is 50x14,
 237         // translate this to pixels
 238         // NB1: the multipliers come from the Windows convention
 239         // NB2: the extra +1/+2 were needed to get the size be the same as the
 240         //      size of the buttons in the standard dialog - I don't know how
 241         //      this happens, but on my system this size is 75x23 in pixels and
 242         //      23*8 isn't even divisible by 14... Would be nice to understand
 243         //      why these constants are needed though!
 244         s_sizeBtn.x = (50 * (dc.GetCharWidth() + 1))/4;
 245         s_sizeBtn.y = ((14 * dc.GetCharHeight()) + 2)/8;
 246     }
 247
 248     return s_sizeBtn;
 249 }
 250
 251 // ----------------------------------------------------------------------------
 252 // default button handling
 253 // ----------------------------------------------------------------------------
 254
 255 /*
 256    "Everything you ever wanted to know about the default buttons" or "Why do we
 257    have to do all this?"
 258
 259    In MSW the default button should be activated when the user presses Enter
 260    and the current control doesn't process Enter itself somehow. This is
 261    handled by ::DefWindowProc() (or maybe ::DefDialogProc()) using DM_SETDEFID
 262    Another aspect of "defaultness" is that the default button has different
 263    appearance: this is due to BS_DEFPUSHBUTTON style which is completely
 264    separate from DM_SETDEFID stuff (!). Also note that BS_DEFPUSHBUTTON should
 265    be unset if our parent window is not active so it should be unset whenever
 266    we lose activation and set back when we regain it.
 267
 268    Final complication is that when a button is active, it should be the default
 269    one, i.e. pressing Enter on a button always activates it and not another
 270    one.
 271
 272    We handle this by maintaining a permanent and a temporary default items in
 273    wxControlContainer (both may be NULL). When a button becomes the current
 274    control (i.e. gets focus) it sets itself as the temporary default which
 275    ensures that it has the right appearance and that Enter will be redirected
 276    to it. When the button loses focus, it unsets the temporary default and so
 277    the default item will be the permanent default -- that is the default button
 278    if any had been set or none otherwise, which is just what we want.
 279
 280    NB: all this is quite complicated by now and the worst is that normally
 281        it shouldn't be necessary at all as for the normal Windows programs
 282        DefWindowProc() and IsDialogMessage() take care of all this
 283        automatically -- however in wxWindows programs this doesn't work for
 284        nested hierarchies (i.e. a notebook inside a notebook) for unknown
 285        reason and so we have to reproduce all this code ourselves. It would be
 286        very nice if we could avoid doing it.
 287  */
 288
 289 // set this button as the (permanently) default one in its panel
 290 void wxButton::SetDefault()
 291 {
 292     wxWindow *parent = GetParent();
 293
 294     wxCHECK_RET( parent, _T("button without parent?") );
 295
 296     // set this one as the default button both for wxWindows ...
 297     wxWindow *winOldDefault = parent->SetDefaultItem(this);
 298
 299     // ... and Windows
 300     SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), FALSE);
 301     SetDefaultStyle(this, TRUE);
 302 }
 303
 304 // set this button as being currently default
 305 void wxButton::SetTmpDefault()
 306 {
 307     wxWindow *parent = GetParent();
 308
 309     wxCHECK_RET( parent, _T("button without parent?") );
 310
 311     wxWindow *winOldDefault = parent->GetDefaultItem();
 312     parent->SetTmpDefaultItem(this);
 313
 314     SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), FALSE);
 315     SetDefaultStyle(this, TRUE);
 316 }
 317
 318 // unset this button as currently default, it may still stay permanent default
 319 void wxButton::UnsetTmpDefault()
 320 {
 321     wxWindow *parent = GetParent();
 322
 323     wxCHECK_RET( parent, _T("button without parent?") );
 324
 325     parent->SetTmpDefaultItem(NULL);
 326
 327     wxWindow *winOldDefault = parent->GetDefaultItem();
 328
 329     SetDefaultStyle(this, FALSE);
 330     SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), TRUE);
 331 }
 332
 333 /* static */
 334 void
 335 wxButton::SetDefaultStyle(wxButton *btn, bool on)
 336 {
 337     // we may be called with NULL pointer -- simpler to do the check here than
 338     // in the caller which does wxDynamicCast()
 339     if ( !btn )
 340         return;
 341
 342     // first, let DefDlgProc() know about the new default button
 343     if ( on )
 344     {
 345         // we shouldn't set BS_DEFPUSHBUTTON for any button if we don't have
 346         // focus at all any more
 347         if ( !wxTheApp->IsActive() )
 348             return;
 349
 350         // look for a panel-like window
 351         wxWindow *win = btn->GetParent();
 352         while ( win && !win->HasFlag(wxTAB_TRAVERSAL) )
 353             win = win->GetParent();
 354
 355         if ( win )
 356         {
 357             ::SendMessage(GetHwndOf(win), DM_SETDEFID, btn->GetId(), 0L);
 358
 359             // sending DM_SETDEFID also changes the button style to
 360             // BS_DEFPUSHBUTTON so there is nothing more to do
 361         }
 362     }
 363
 364     // then also change the style as needed
 365     long style = ::GetWindowLong(GetHwndOf(btn), GWL_STYLE);
 366     if ( !(style & BS_DEFPUSHBUTTON) == on )
 367     {
 368         // don't do it with the owner drawn buttons because it will
 369         // reset BS_OWNERDRAW style bit too (as BS_OWNERDRAW &
 370         // BS_DEFPUSHBUTTON != 0)!
 371         if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW )
 372         {
 373             ::SendMessage(GetHwndOf(btn), BM_SETSTYLE,
 374                           on ? style | BS_DEFPUSHBUTTON
 375                              : style & ~BS_DEFPUSHBUTTON,
 376                           1L /* redraw */);
 377         }
 378         else // owner drawn
 379         {
 380             // redraw the button - it will notice itself that it's
 381             // [not] the default one [any longer]
 382             btn->Refresh();
 383         }
 384     }
 385     //else: already has correct style
 386 }
 387
 388 // ----------------------------------------------------------------------------
 389 // helpers
 390 // ----------------------------------------------------------------------------
 391
 392 bool wxButton::SendClickEvent()
 393 {
 394     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
 395     event.SetEventObject(this);
 396
 397     return ProcessCommand(event);
 398 }
 399
 400 void wxButton::Command(wxCommandEvent & event)
 401 {
 402     ProcessCommand(event);
 403 }
 404
 405 // ----------------------------------------------------------------------------
 406 // event/message handlers
 407 // ----------------------------------------------------------------------------
 408
 409 bool wxButton::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 410 {
 411     bool processed = FALSE;
 412     switch ( param )
 413     {
 414         // NOTE: Apparently older versions (NT 4?) of the common controls send
 415         //       BN_DOUBLECLICKED but not a second BN_CLICKED for owner-drawn
 416         //       buttons, so in order to send two EVET_BUTTON events we should
 417         //       catch both types.  Currently (Feb 2003) up-to-date versions of
 418         //       win98, win2k and winXP all send two BN_CLICKED messages for
 419         //       all button types, so we don't catch BN_DOUBLECLICKED anymore
 420         //       in order to not get 3 EVT_BUTTON events.  If this is a problem
 421         //       then we need to figure out which version of the comctl32 changed
 422         //       this behaviour and test for it.
 423
 424         case 1:                     // message came from an accelerator
 425         case BN_CLICKED:            // normal buttons send this
 426             processed = SendClickEvent();
 427             break;
 428     }
 429
 430     return processed;
 431 }
 432
 433 long wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 434 {
 435     // when we receive focus, we want to temporary become the default button in
 436     // our parent panel so that pressing "Enter" would activate us -- and when
 437     // losing it we should restore the previous default button as well
 438     if ( nMsg == WM_SETFOCUS )
 439     {
 440         SetTmpDefault();
 441
 442         // let the default processing take place too
 443     }
 444     else if ( nMsg == WM_KILLFOCUS )
 445     {
 446         UnsetTmpDefault();
 447     }
 448     else if ( nMsg == WM_LBUTTONDBLCLK )
 449     {
 450         // emulate a click event to force an owner-drawn button to change its
 451         // appearance - without this, it won't do it
 452         (void)wxControl::MSWWindowProc(WM_LBUTTONDOWN, wParam, lParam);
 453
 454         // and continue with processing the message normally as well
 455     }
 456
 457     // let the base class do all real processing
 458     return wxControl::MSWWindowProc(nMsg, wParam, lParam);
 459 }
 460
 461 // ----------------------------------------------------------------------------
 462 // owner-drawn buttons support
 463 // ----------------------------------------------------------------------------
 464
 465 #ifdef __WIN32__
 466
 467 // drawing helpers
 468
 469 static void DrawButtonText(HDC hdc,
 470                            RECT *pRect,
 471                            const wxString& text,
 472                            COLORREF col)
 473 {
 474     COLORREF colOld = SetTextColor(hdc, col);
 475     int modeOld = SetBkMode(hdc, TRANSPARENT);
 476
 477     // Note: we must have DT_SINGLELINE for DT_VCENTER to work.
 478     ::DrawText(hdc, text, text.length(), pRect, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
 479
 480     SetBkMode(hdc, modeOld);
 481     SetTextColor(hdc, colOld);
 482 }
 483
 484 static void DrawRect(HDC hdc, const RECT& r)
 485 {
 486     wxDrawLine(hdc, r.left, r.top, r.right, r.top);
 487     wxDrawLine(hdc, r.right, r.top, r.right, r.bottom);
 488     wxDrawLine(hdc, r.right, r.bottom, r.left, r.bottom);
 489     wxDrawLine(hdc, r.left, r.bottom, r.left, r.top);
 490 }
 491
 492 void wxButton::MakeOwnerDrawn()
 493 {
 494     long style = GetWindowLong(GetHwnd(), GWL_STYLE);
 495     if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW )
 496     {
 497         // make it so
 498         style |= BS_OWNERDRAW;
 499         SetWindowLong(GetHwnd(), GWL_STYLE, style);
 500     }
 501 }
 502
 503 bool wxButton::SetBackgroundColour(const wxColour &colour)
 504 {
 505     if ( !wxControl::SetBackgroundColour(colour) )
 506     {
 507         // nothing to do
 508         return FALSE;
 509     }
 510
 511     MakeOwnerDrawn();
 512
 513     Refresh();
 514
 515     return TRUE;
 516 }
 517
 518 bool wxButton::SetForegroundColour(const wxColour &colour)
 519 {
 520     if ( !wxControl::SetForegroundColour(colour) )
 521     {
 522         // nothing to do
 523         return FALSE;
 524     }
 525
 526     MakeOwnerDrawn();
 527
 528     Refresh();
 529
 530     return TRUE;
 531 }
 532
 533 /*
 534    The button frame looks like this normally:
 535
 536    WWWWWWWWWWWWWWWWWWB
 537    WHHHHHHHHHHHHHHHHGB  W = white       (HILIGHT)
 538    WH               GB  H = light grey  (LIGHT)
 539    WH               GB  G = dark grey   (SHADOW)
 540    WH               GB  B = black       (DKSHADOW)
 541    WH               GB
 542    WGGGGGGGGGGGGGGGGGB
 543    BBBBBBBBBBBBBBBBBBB
 544
 545    When the button is selected, the button becomes like this (the total button
 546    size doesn't change):
 547
 548    BBBBBBBBBBBBBBBBBBB
 549    BWWWWWWWWWWWWWWWWBB
 550    BWHHHHHHHHHHHHHHGBB
 551    BWH             GBB
 552    BWH             GBB
 553    BWGGGGGGGGGGGGGGGBB
 554    BBBBBBBBBBBBBBBBBBB
 555    BBBBBBBBBBBBBBBBBBB
 556
 557    When the button is pushed (while selected) it is like:
 558
 559    BBBBBBBBBBBBBBBBBBB
 560    BGGGGGGGGGGGGGGGGGB
 561    BG               GB
 562    BG               GB
 563    BG               GB
 564    BG               GB
 565    BGGGGGGGGGGGGGGGGGB
 566    BBBBBBBBBBBBBBBBBBB
 567 */
 568
 569 static void DrawButtonFrame(HDC hdc, const RECT& rectBtn,
 570                             bool selected, bool pushed)
 571 {
 572     RECT r;
 573     CopyRect(&r, &rectBtn);
 574
 575     HPEN hpenBlack   = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DDKSHADOW)),
 576          hpenGrey    = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DSHADOW)),
 577          hpenLightGr = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DLIGHT)),
 578          hpenWhite   = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DHILIGHT));
 579
 580     HPEN hpenOld = (HPEN)SelectObject(hdc, hpenBlack);
 581
 582     r.right--;
 583     r.bottom--;
 584
 585     if ( pushed )
 586     {
 587         DrawRect(hdc, r);
 588
 589         (void)SelectObject(hdc, hpenGrey);
 590         InflateRect(&r, -1, -1);
 591
 592         DrawRect(hdc, r);
 593     }
 594     else // !pushed
 595     {
 596         if ( selected )
 597         {
 598             DrawRect(hdc, r);
 599
 600             InflateRect(&r, -1, -1);
 601         }
 602
 603         wxDrawLine(hdc, r.left, r.bottom, r.right, r.bottom);
 604         wxDrawLine(hdc, r.right, r.bottom, r.right, r.top - 1);
 605
 606         (void)SelectObject(hdc, hpenWhite);
 607         wxDrawLine(hdc, r.left, r.bottom - 1, r.left, r.top);
 608         wxDrawLine(hdc, r.left, r.top, r.right, r.top);
 609
 610         (void)SelectObject(hdc, hpenLightGr);
 611         wxDrawLine(hdc, r.left + 1, r.bottom - 2, r.left + 1, r.top + 1);
 612         wxDrawLine(hdc, r.left + 1, r.top + 1, r.right - 1, r.top + 1);
 613
 614         (void)SelectObject(hdc, hpenGrey);
 615         wxDrawLine(hdc, r.left + 1, r.bottom - 1, r.right - 1, r.bottom - 1);
 616         wxDrawLine(hdc, r.right - 1, r.bottom - 1, r.right - 1, r.top);
 617     }
 618
 619     (void)SelectObject(hdc, hpenOld);
 620     DeleteObject(hpenWhite);
 621     DeleteObject(hpenLightGr);
 622     DeleteObject(hpenGrey);
 623     DeleteObject(hpenBlack);
 624 }
 625
 626 bool wxButton::MSWOnDraw(WXDRAWITEMSTRUCT *wxdis)
 627 {
 628     LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT)wxdis;
 629
 630     RECT rectBtn;
 631     CopyRect(&rectBtn, &lpDIS->rcItem);
 632
 633     COLORREF colBg = wxColourToRGB(GetBackgroundColour()),
 634              colFg = wxColourToRGB(GetForegroundColour());
 635
 636     HDC hdc = lpDIS->hDC;
 637     UINT state = lpDIS->itemState;
 638
 639     // first, draw the background
 640     HBRUSH hbrushBackground = ::CreateSolidBrush(colBg);
 641
 642     FillRect(hdc, &rectBtn, hbrushBackground);
 643
 644     // draw the border for the current state
 645     bool selected = (state & ODS_SELECTED) != 0;
 646     if ( !selected )
 647     {
 648         wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
 649         if ( panel )
 650         {
 651             selected = panel->GetDefaultItem() == this;
 652         }
 653     }
 654     bool pushed = (SendMessage(GetHwnd(), BM_GETSTATE, 0, 0) & BST_PUSHED) != 0;
 655
 656     DrawButtonFrame(hdc, rectBtn, selected, pushed);
 657
 658     // draw the focus rect if needed
 659     if ( state & ODS_FOCUS )
 660     {
 661         RECT rectFocus;
 662         CopyRect(&rectFocus, &rectBtn);
 663
 664         // I don't know where does this constant come from, but this is how
 665         // Windows draws them
 666         InflateRect(&rectFocus, -4, -4);
 667
 668         DrawFocusRect(hdc, &rectFocus);
 669     }
 670
 671     if ( pushed )
 672     {
 673         // the label is shifted by 1 pixel to create "pushed" effect
 674         OffsetRect(&rectBtn, 1, 1);
 675     }
 676
 677     DrawButtonText(hdc, &rectBtn, GetLabel(),
 678                    state & ODS_DISABLED ? GetSysColor(COLOR_GRAYTEXT)
 679                                         : colFg);
 680
 681     ::DeleteObject(hbrushBackground);
 682
 683     return TRUE;
 684 }
 685
 686 #endif // __WIN32__
 687
 688 #endif // wxUSE_BUTTON
 689